<template>
    <div>
        <!-- 面包屑导航区 -->
        <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片区域 -->
        <el-card class="box-card">
            <!-- 搜索框区域 -->
            <el-row :gutter="20">
                <el-col :span="8">
                    <el-input clearable placeholder="请输入内容" class="input-with-select" v-model="queryInfo.query"
                        @clear="getUserlist">
                        <el-button slot="append" icon="el-icon-search" @click="getUserlist"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="adduserVisible = true">添加用户</el-button>
                </el-col>
            </el-row>

            <!-- 用户列表表格区域 -->
            <el-table :data="userslist" border stripe>
                <!-- 索引列只需type="index即可" -->
                <el-table-column type="index">
                </el-table-column>
                <el-table-column prop="username" label="姓名">
                </el-table-column>
                <el-table-column prop="email" label="邮箱">
                </el-table-column>
                <el-table-column prop="mobile" label="电话">
                </el-table-column>
                <el-table-column prop="role_name" label="角色">
                </el-table-column>
                <el-table-column label="状态">
                    <!-- 下面指定了作用域插槽同时有prop，则prop就不生效了 -->
                    <template slot-scope="scope">
                        <el-switch v-model="scope.row.mg_state" @change="userStateChange(scope.row)">
                        </el-switch>
                    </template>
                </el-table-column>
                <el-table-column prop="emeil" label="操作" width="175px">
                    <!-- 修改用户信息的按钮 -->
                    <template slot-scope="scope">
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="editUserdialog(scope.row.id)">
                        </el-button>
                        <!-- 删除按钮 -->
                        <el-button type="danger" icon="el-icon-delete" size="mini"
                            @click="deleteUserById(scope.row.id)">
                        </el-button>
                        <!-- 分配角色按钮 -->
                        <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                            <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)">
                            </el-button>
                        </el-tooltip>
                    </template>

                </el-table-column>
            </el-table>
            <!-- 分页区域 -->

            <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum" :page-sizes="[1, 2, 5, 10]" :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper" :total=total>
            </el-pagination>

        </el-card>
        <!-- 添加用户对话框区 -->
        <!-- :visible.sync="adduserVisible"用来控制对话框的显示与隐藏 -->
        <el-dialog title="添加用户" :visible.sync="adduserVisible" width="50%" @close="addclose">
            <!-- 内容主体区域 -->
            <el-form :model="adduserForm" :rules="adduserrules" ref="adduserFormRef" label-width="70px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="adduserForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="adduserForm.password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="adduserForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="adduserForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 添加按钮区 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="adduserVisible = false">取 消</el-button>
                <el-button type="primary" @click="adduser">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 添加修改用户信息对话框 -->
        <el-dialog title="修改用户信息" :visible.sync="edituserVisible" width="50%" @close="editCloseVisible">
            <el-form :model="editFrom" :rules="editFromRules" ref="editFromRef" label-width="70px">
                <el-form-item label="用户名">
                    <el-input v-model="editFrom.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editFrom.email"></el-input>
                </el-form-item>
                <el-form-item label="手机号" prop="mobile">
                    <el-input v-model="editFrom.mobile"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="edituserVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 添加分配角色的对话框 -->
        <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%">
            <div>
                <p>当前的用户：{{ UserInfo.username }}</p>
                <p>当前的角色：{{ UserInfo.role_name }}</p>
                <p>分配新角色：
                    <el-select v-model="selectedRoleId" placeholder="请选择">
                        <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
                        </el-option>
                    </el-select>
                </p>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
        </el-dialog>

    </div>
</template>

<script>
export default {
    data() {
        // 验证邮箱的规则
        var checkEmail = (rule, value, callback) => {
            const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
            if (regEmail.test(value)) {
                // 合法邮箱
                return callback()
            }
            callback(new Error('请输入合法的邮箱'))
        }
        // 验证手机的规则
        var checkMobile = (rule, value, cb) => {
            // 验证手机号的规则
            const regMobile =
                /^(0|86|17951|)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[0-9]}|19[0-9])[0-9]{8}$/
            if (regMobile.test(value)) {
                return cb();
            }
            cb(new Error("请输入合法的手机号"));
        };
        return {
            // 获取用户列表的参数对象
            queryInfo: {
                query: '',
                // 当前页码
                pagenum: 1,
                // 每页显示条数
                pagesize: 2
            },
            userslist: [],
            total: 0,
            // 对话框的显示隐藏，此刻为隐藏
            adduserVisible: false,
            edituserVisible: false,
            // 分配角色的对话框显示与隐藏
            setRoleDialogVisible: false,
            // 需要分配角色的用户信息
            UserInfo: {},
            editFrom: {},
            // 获取角色的列表
            rolesList: {},
            // 已选中的角色Id值
            selectedRoleId: '',
            adduserForm: {
                username: '',
                password: '',
                email: '',
                mobile: ''
            },
            editFromRules: {
                email: [
                    { required: true, message: '请输入邮箱', trigger: 'blur' }, { validator: checkEmail, trigger: 'blur' }
                ],
                mobile: [
                    { required: true, message: '请输入手机号码', trigger: 'blur' }, { validator: checkMobile, trigger: 'blur' }
                ],
            },
            adduserrules: {
                username: [
                    { required: true, message: '请输入用户名', trigger: 'blur' },
                    { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' }
                ],
                password: [
                    { required: true, message: '请输入密码', trigger: 'blur' },
                    { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
                ],
                email: [
                    { required: true, message: '请输入邮箱', trigger: 'blur' }, { validator: checkEmail, trigger: 'blur' }
                ],
                mobile: [
                    { required: true, message: '请输入手机号码', trigger: 'blur' }, { validator: checkMobile, trigger: 'blur' }
                ],
            }


        }
    },
    created() {
        this.getUserlist()
    },
    methods: {
        //获取用户数据请求
        async getUserlist() {
            const { data: res } = await this.$http.get('users', { params: this.queryInfo })

            if (res.meta.status !== 200) {
                return this.$$message.error('获取用户列表失败')
            }
            this.userslist = res.data.users
            this.total = res.data.total
            console.log(res)
        },
        // 监听pagesize改变事件,选择每页显示多少条的事件
        handleSizeChange(newsize) {
            this.queryInfo.pagesize = newsize
            this.getUserlist()
            console.log('每页显示:', newsize)
        },
        // 监听页码值发生变化的事件
        handleCurrentChange(newpage) {
            this.queryInfo.pagenum = newpage
            this.getUserlist()
            console.log('页码值为:', newpage)
        },
        // 监听用户的状态变化
        async userStateChange(userStage) {
            const { data: res } = await this.$http.put(`users/${userStage.id}/state/${userStage.mg_state}`)
            console.log(res)
            if (res.meta.status !== 200) {
                //更新用户状态失败要保证原本的状态不变
                userStage.mg_state = !userStage.mg_state
                return this.$message.error('更新用户状态失败!')
            } this.$message.success('更新用户状态成功!')

        },
        // 监听添加用户对话框关闭事件
        addclose() {
            //    $refs用以查找绑定的属性的
            // resetFields是element中对整个表单进行重置，将所有字段值重置为初始值并移除校验结果
            this.$refs.adduserFormRef.resetFields()
        },
        // 点击添加用户
        adduser() {
            //     validate是element中对整个表单进行校验的方法，参数为一个回调函数。该回调函数会在校验结束后被调用，并传入两个参数：是否校验成功和未通过校验的字段。若不传入回调函数，则会返回一个 promise
            this.$refs.adduserFormRef.validate(async valid => {
                console.log(valid)
                if (!valid) return
                // 验证通过后则发请求
                const { data: res } = await this.$http.post('users', this.adduserForm)
                if (res.data.status !== 201) {
                    this.$message.error('添加用户失败')
                }
                this.$message.success('添加用户成功')
                //  隐藏添加的对话框
                this.adduserVisible = false
                // 重新获取用户列表
                this.getUserlist()
            })
        },
        // 点击显示隐藏修改用户信息弹框
        async editUserdialog(id) {
            const { data: res } = await this.$http.get('users/' + id)

            if (res.meta.status !== 200) {
                return this.$message.error('查询用户信息失败！')
            }
            console.log(id)
            this.editFrom = res.data
            this.edituserVisible = true

        },
        // 监听修改用户对话框关闭事件
        editCloseVisible() {
            this.$refs.editFromRef.resetFields()
        },
        // 修改用户信息并提交
        editUserInfo() {
            this.$refs.editFromRef.validate(async valid => {
                if (!valid) return
                // 发起修改用户信息的数据请求
                const { data: res } = await this.$http.put('users/' + this.editFrom.id, { email: this.editFrom.email, mobile: this.editFrom.mobile })
                if (res.meta.status !== 200) {
                    return this.$message.error('更新用户信息失败')
                }
                // 关闭对话框
                this.edituserVisible = false
                console.log(777)
                // 刷新数据列表
                this.getUserlist()
                // 提示修改成功
                this.$message.success('更新用户信息成功！')
            })
        },
        // 删除用户
        async deleteUserById(id) {
            const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err => err)
            // console.log(confirmResult)//打印来判断是否取消还是删除
            // 如果用户确认删除，则返回值为confirm
            // 如果用户取消了删除，则返回值为字符串cancel
            if (confirmResult !== 'confirm') {
                return this.$message.info('已取消删除')
            }
            const { data: res } = await this.$http.delete('users/' + id)
            if (res.meta.status !== 200) {
                // console.log(res)
                return this.$message.error('删除用户失败！')
                console.log(res)
            }
            this.$message.success('删除用户成功！')
            this.getUserlist()
            // console.log('确认了删除')


        },
        // 展示分配角色的对话框
        async setRole(UserInfo) {
            this.UserInfo = UserInfo
            // 在展示对话框之前，获取所有角色的列表
            const { data: res } = await this.$http.get('roles')
            if (res.meta.status !== 200) {
                return this.$message.error('获取角色列表失败!')
            }
            this.rolesList = res.data
            this.setRoleDialogVisible = true
        },
        //点击按钮，分配角色
        async saveRoleInfo() {
            if (!this.selectedRoleId) {
                return this.$message.error('请选择要选择的角色')
            }
            const { data: res } = await this.$http.put(`users/${this.UserInfo.id}/role`, { rid: this.selectedRoleId })
            if (res.meta.status !== 200) {
                return this.$message.error('更新角色失败')
            }
            this.$message.success('更新角色成功')
            this.getUserlist()
            this.setRoleDialogVisible = false
        }

    }

}
</script>

<style lang="less" scoped>
.el-pagination {
    margin-top: 20px;
}
</style>